Last week, UNESCO added 18 sites to its World Heritage List. Two natural and 16 cultural sites, including a historical mining town in Chile, the Vizcaya Bridge in Spain, and giant panda sanctuaries in China were added to the existing list of 830 properties selected for their "outstanding universal value."

The UNESCO website has some interesting ways to find and learn about World Heritage sites. Zooming and clicking on its interactive map allows you to search by world region, or to get a broad overview. There's also a way to browse sites by country, with links to brief descriptions, photos, and other information. While it's not the ultimate resource for planning a trip to a World Heritage site, there are links to sites with the practical information. For people interested in seeking out cultural and natural heritage while traveling, this can be a useful basic planning tool.